Corrosion rate of ordinary and high-performance concrete subjected to chloride attack by AC impedance spectroscopy

2006 ◽  
Vol 20 (7) ◽  
pp. 458-469 ◽  
Author(s):  
Mohamed Ismail ◽  
Masayasu Ohtsu
Keyword(s):  
Impedance Spectroscopy ◽  
Corrosion Rate ◽  
High Performance ◽  
High Performance Concrete ◽  
Ac Impedance ◽  
Ac Impedance Spectroscopy ◽  
Chloride Attack

Monitoring corrosion rate for ordinary portland concrete (OPC) and high-performance concrete (HPC) specimens subjected to chloride attack

2002 ◽  
Vol 29 (6) ◽  
pp. 863-874 ◽  
Author(s):  
Mohamed E Ismail ◽  
Hamid R Soleymani
Keyword(s):  
Corrosion Rate ◽  
High Performance ◽  
High Performance Concrete ◽  
Chloride Concentration ◽  
Electrochemical Technique ◽  
Reinforcing Steel ◽  
Destructive Testing ◽  
Corrosion Rates ◽  
Chloride Attack ◽  
American Society

This paper presents the results and the applicability of an electrochemical technique, the Tafel plot method, for determining the corrosion rate of reinforcing steel embedded in laboratory ordinary portland concrete (OPC) and high-performance concrete (HPC) specimens. Fifty-two OPC and 52 HPC concrete cylinders, each with a single embedded reinforcing steel rod, have been subjected to various laboratory conditions, and the corrosion rate of each specimen has been monitored. Results indicate that HPC specimens performed much better than OPC specimens in terms of resisting corrosion, as the corrosion rates were far lower for the HPC specimens than for the OPC specimens. Sodium chloride concentration played an important role in the propagation of corrosion: the higher the NaCl concentration, the higher the corrosion rate. In addition, different cycles of wetting and drying of concrete specimens had different impacts on corrosion rates. Results for the chloride concentration based on the American Society for Testing and Materials (ASTM) destructive testing method C1218 were in agreement with the corrosion rate results from the Tafel plot method used in the study.Key words: corrosion, electrochemical, reinforced concrete, Tafel method, high-performance concrete.

Characterization of the Conductance Mechanisms of DNA Origami by AC Impedance Spectroscopy

Small ◽  
2009 ◽  
Vol 5 (21) ◽  
pp. 2382-2386 ◽  
Author(s):  
Veikko Linko ◽  
Seppo-Tapio Paasonen ◽  
Anton Kuzyk ◽  
Päivi Törmä ◽  
J. Jussi Toppari
Keyword(s):  
Impedance Spectroscopy ◽  
Ac Impedance ◽  
Dna Origami ◽  
Ac Impedance Spectroscopy

Tailored upconversion emission of Eu3+ in Sr2Ca(W,Mo)O6:Yb3+,Eu3+ by a laser via an electronic polarization mechanism

2015 ◽  
Vol 3 (19) ◽  
pp. 4997-5003 ◽  
Author(s):  
Ye Li ◽  
Tianhui Liu ◽  
Shi Ye ◽  
Tengfei Deng ◽  
Xiong Yi ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Dielectric Function ◽  
Theoretical Calculations ◽  
Ac Impedance ◽  
Upconversion Emission ◽  
Ac Impedance Spectroscopy ◽  
Electronic Polarization ◽  
Polarization Mechanism

The 5D0 → 7F4 upconversion emission of Eu3+ in Sr2Ca(W,Mo)O6:Yb3+,Eu3+ is tailored by a laser via an electronic polarization mechanism, which is deduced by AC impedance spectroscopy measurements and theoretical calculations of the dielectric function.

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